Kang, H. ., H. . Han, G. . Hui, J. . Gao, and Y. . Su. “Sustainable Strategy for Gas Supply in China: Based on Foam Drainage Gas Recovery Technology”. Strategic Planning for Energy and the Environment, vol. 42, no. 02, Jan. 2023, pp. 263-82, doi:10.13052/spee1048-5236.4221.